Bearing sealing device

Abstract

The invention belongs to technical field of rotating component sealing, and discloses a bearing sealing device. A rotating shaft is installed in a bearing inner ring. A bearing pedestal is installed on a bearing outer ring. The bearing sealing device is characterized by comprising an annular groove formed in the outer end face of the bearing pedestal, wherein the annular groove and the rotating shaft are coaxial, the inner annular face of the annular groove is arranged to be a conical face, the diameter of the opening of the conical face is smaller than the diameter of the bottom of the conical face, a disc-spring-shaped sealing ring matched with the inner annular face is arranged in the annular groove, a check ring is installed on the rotating shaft, one end of the check ring is attached to the outer end face of the bearing inner ring, the other end of the check ring extends out of the outer end face of the bearing pedestal, and the disc-spring-shaped sealing ring and the check ring are fixed together. The bearing sealing device is simple in structure, good in sealing effect, particularly applicable to oil sealing of a self-aligning roller bearing and long in service life.

Description

technical field [0001] The invention belongs to the technical field of sealing of rotating parts, in particular to a bearing sealing device. Background technique [0002] At present, the shaft lip seal is generally used for the sealing of bearings, which is lubricated by grease, and the grease is generally 1.5# or 2# grease; however, almost all bearings have obvious leakage; especially the leakage of self-aligning bearings is even more serious. The reason is that the self-aligning bearing has good self-alignment, which can make the shaft deflect to a certain extent, and the deflection of the shaft will directly cause the lip seal ring to be squeezed and deformed, thereby losing the sealing effect and lubricating The grease leaks along the gap caused by the deformation of the sealing ring. Therefore, it is necessary to study a new sealing device to solve the sealing of bearings, especially the sealing of self-aligning bearings. Contents of the invention [0003] The purpo...

AI Technical Summary

Problems solved by technology

[0002] At present, the shaft lip seal is generally used for the sealing of bearings, which is lubricated by grease, and the grease is generally 1.5# or 2# grease; however, almost all bearings have obvious leakage; especially the leakage of self-aligning bearings is even more serious. The reason is that the self-aligning bearing has good self-alignment, which can make the shaft deflect to a certain extent, and the deflection of the shaft will directly cause the lip seal ring to be squeezed and deformed, thereby losing the sealing effect and lubricating The gap leakage caused by the deformation of the grease along the sealing ring

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